material_base-8.x-2.x-dev/themes/material_base_mdc/templates/layout/region--drawer.html.twig

{#
/**
 * @file
 * Theme override to display a region.
 *
 * Available variables:
 * - content: The content for this region, typically blocks.
 * - attributes: HTML attributes for the region <div>.
 * - region: The name of the region variable as defined in the theme's
 *   .info.yml file.
 *
 * @see template_preprocess_region()
 */
#}

{% if drawer_style != 'permanent' %}
  {% set attributes = attributes.setAttribute('data-mdc-auto-init', 'MDCDrawer') %}
  
  {% if drawer_height == 'below_navbar' %}
    {% if navbar_style == 'dense' %}
      {% set navbar_style_adjust = 'mdc-top-app-bar--dense-fixed-adjust' %}
    {% elseif navbar_style == 'prominent' %}
      {% set navbar_style_adjust = 'mdc-top-app-bar--prominent-fixed-adjust' %}
    {% else %}
      {% set navbar_style_adjust = 'mdc-top-app-bar--fixed-adjust' %}
    {% endif %}
  {% endif %}
{% endif %}

{% set classes = [
    'region',
    'region-' ~ region|clean_class,
    'page-drawer',
    'drawer',
    'mdc-drawer',
    drawer_style != 'parmanent' ? 'mdc-drawer--' ~ drawer_style,
    navbar_style_adjust ? navbar_style_adjust,
] %}

{% if content %}
  <div{{ attributes.addClass(classes) }}>
    {#
    <div class="mdc-drawer__header">
      <!-- Logo or title -->
    </div>
    #}
    <div class="mdc-drawer__content">

      {{ content }}

      {# Bottom action #}
    </div>
  </div>
  {% if drawer_style == 'modal' %}
    <div class="mdc-drawer-scrim"></div>
  {% endif %}
{% endif %}